Sanitary milk carton



June 30, 1953 KOMEO 2,643,815

' SANITARY MILK CARTON Filed Jan. 26, 1951 I 2 Sheets-Sheet l scar Woe?INVENTOR.

Patented June 30, 1953 UNITED STATES PATENT OFFICE SANITARY MILK CARTONOscar Komeo, Linden, Mich.

Application January 26, 1951, Serial No. 207,873

The present invention relates to certain new and useful improvements insheet material commodity cartons and has more particular reference to acardboard paraffin coated container which is especially, but notnecessarily, adapted to function as a sanitary throw-away milk carton.

It is a matterof common knowledge that throwaway milk cartons are ofmany styles and forms. As a general rule, milk cartons in the categoryunder consideration are constructed from cardboard or the like and areinteriorly and exteriorly coated, to render same leak-proof and stable,with paraffin and analogous wax coatings. Cartons commonly in use arevertically elongated, are rectangular in cross-section and have fiatupper and lower ends. The upper end is usually formed with a pouringhole having associated therewith a pull-type closing tab.

It is an object of the present invention to structurally, functionallyand otherwise improve upon prior art carton construction and, in sodoing, to provide one in which manufacturers and users will find theiressential requirements and needs fully met, contained and satisfactorilyavailable.

More specifically, novelty is predicated on a carton whose bottom isstrong and durable and is characterized by a plurality of overlappingfolds or sections which, when united, define an exceptionally strong andreliable leak-proof base.

Secondly, novelty is predicated on a carton construction which isneither too limber nor too flimsy at the top. This result is had throughthe medium of a truncated pyramidal funnellike pouring neck, a neckwhich is possessed of inherent properties of stability and strength.

Then, too, further novelty has to do with the stated truncated pyramidalneck whose truncated end or discharge mouth is characterized by atriple-flange lip forming rim which not only adds strength to thepouring neck but also provides a convenient lip to assist in pouring andpitching the milk in an obvious spout-like manner.

What is more, the improved carton has a flat permanently and hingedlyattached neck covering lid and the lid has marginal flange means whichinterlock with the lip means and hood over the latter and promotesanitation.

Other objects and advantages will become more readily apparent from thefollowing description and the accompanying drawings.

In the accompanying drawings, wherein like numerals are employed todesignate like parts throughout the views:

2 Claims. ((31. 229-44) Figure 1 is a perspective view of a finished,ready-to-use milk carton constructed in accordance with the principlesof the present invention;

Figure 2 is an enlarged fragmentary perspective of the upper neckportion of the carton, showing the construction of the latter and alsoshowing the lid in its open position;

Figure 3 is a bottom vplan view;

Figure 4 is an enlarged cross-section on the line 44 of Figure 1,looking in the direction 0 the arrows;

Figure 5 is a fragmentary central vertical section through the upperportion taken on the line 5-5 of Figure 1;

Figure 6 is a fragmentary sectional and elevational view through thebase or lower portion of the carton, taken on the line 6--6 of Figure 4,looking in the direction of the arrows;

Figure '7 is a cross-section on the line 7-1 of Figure 5,lookingupwardly in the direction of the arrows; and

Figure 8 is a plan view of the blank or cardboard pattern from which thefinished carton is made up.

Reference is had first to the cardboard or equivalent sheet materialblank illustrated in Figure 8. The blank is essentially rectangular inplan view as shown. The main or body portion of the blank is obviouslylaidout to provide the receptacle portion of the container. are severalparallel fold lines and these are denoted by the numerals Hi. Thesedefine rectangular panel members which in turn define the walls of thereceptacle. The main panel toward the right is denoted by the numeral l2and the other three panels are denoted by the same numerals, that is thenumerals I l, and for convenience these are called auxiliary panels. Thetransverse fold lines !6 adjacent the lower end of the panels definebottom forming sections; namely, a main bottom section [8 for the mainpanel l2 and three auxiliary bottom sections 202fl-20 for the auxiliarywall or panel sections M. Diagonal fold lines 22-22-42 define threetriangular folding and reinforcing gussets 24. None of these portionsare cut but are merely folded into multiple ply overlapping relationshipas shown in the finished product. The upper end portions .of therespective wall-panels l2 and I4 have transverse fold lines 26 and thefour fold lines shown define a main extension 28 and auxiliary orsecondary extensions 3ll-3ll30. These extensions are substantiallyrhomboidal in shape and are integrally joined by V-shaped connectivewebs 32. There are three such webs and There each web has a central foldline 34 so that it may be transformed into halves. The web, as a unit,is halved, folded and fastened as shown, for example, in Figure 2. Theseveral extensions 38 terminate in bendable flanges 34 which arebendable on the fold lines 36. These several flanges have end extensions38 defining connecting tabs. The extension 28 has a fold line 40 whichdefines a web 42 which is joined with an extra extension constitutingthe flat rectangular lid 44. The lid has two side flanges 46 cut asshown and a free edge or front flange 48 which is also bendable orfoldable and has end extensions U5D defining lid retaining and openingmembers which may be best designated as finger-grips. Toward the left,the panel or wall 14 has a fold line 52 defining assembling flap means.lower flap is-denoted at 56 and the upper flap at 58. These are joinedby small gussets 6D, 62 and fihrespeotively. The gussets provide thenecessary take-up folds when the final carton is made up.

In practice, the bottom gussets 2d are folded and tucked in and theauxiliary bottom sections .are.folded in on the fold line H5 at rightangles to the body or receptable portion. The manner in which theseparts, in conjunction with the main section 18, fold and are fastened isshown in the bottom plan in Figure 3 and also in the companion view fromthe interior from Figure 4. The main panels are folded at right anglesto each other and they, in conjunction with the bottom sections arejoined together by the flap means 54 and 56. The V-shaped webs 32 arefolded into halves on the fold lines 34 and they are then tucked intothe neck portion and are secured adhesively against the interiorsurfaces of the extensions against which they are folded, as shown inFigures 2, 5 and v7. The finished neck is secured by the attaching flap53 in an obvious manner. The flanges 38 are folded outwardly at rightangles and the tip or end tab 38 will overlap and seal together, asshown in Figure 2. The several flanges on the lid are also angularlybent in the .manner shown and when the lid is closed down, as shown inFigure 1, these flanges interlock with the rim or lip forming flanges34. The web connection between the lid and the neck portion or extension28 permits the lid to be folded down and closed and allows the flanges46 and 48 to be hooked over and around the perimeter portion of the rimflanges, to thus hood over and protect what ultimately becomes thepouring lip for the bottle or carton; The extensions 505ll are bent upover and sealed against the top surface of the lid when the lid isfinally closed.

The entire carton is, of course, coated with paraflin or a suitablegrade of wax, as is commonly done in this line of endeavor and theparafiin serves to join and seal the various folded portions together inliquid-tight relationship.

Using the blank shown in Figure 8, it is possible to readily crease andfold the various components so that they unite in satisfactory juncturaland carton-forming relationship. Since the blank is a one piececonstruction, it may be struck out expeditiously and marked so that thevarious components may be systematically folded, tucked into place andfinally transformed into an adequate, highly useful commodity carton.The construction employed lends itself to expedient handling and may bemanufactured and sold in keep- The main flap is denoted'at 54, a

4 ing with the economical requirements of the day.

It is thought that persons skilled in the art to which the inventionrelates will be able to obtain a clear understanding of the inventionafter considering the description in connection with the drawings.Therefore, a more lengthly description is regarded as unnecessary.

Minor changes in shape, size and arrangement of details coming withinthe field of invention claimed may be resorted to in actual practice, ifdesired.

Having described the invention, what is claimed as new is:

1, A cardboard paraffin coated milk carton comprising a verticallyelongated rectangular carton having a fiat closed bottom, the upper endportion of said carton having a truncated pyramidal pouring neck, thetruncated end of said neck having lateral outstanding flanges joined andproviding a lip forming rim, and a flat lid having one marginal edgecreased and integrated with a corresponding marginal edge of said neckand hingedly joining the lid with said neck, the remaining marginaledges of said lid having inbent flanges hooked over correspondingportions of said rim and separably interlocked therewith, the flange onthe forward free edge of said lid having bendable tabs at opposite ends,said tabs being folded inwardly toward each other and separably sealedto the top surface of said lid, whereby to provide finger-grips whichassist in unfastening the lid as a step preparatory to opening the lidand uncovering the pouring mouth of the neck.

2. A sheet material milk carton embodying a flat wall-ed receptacleportion all of the walls of which are provided at corresponding endswith converging trapezoidal extensions, the adjacent vertical respectivemarginal edge portions of said extensions being inter-connected bycentrally creased V-shaped webs, said webs being folded and fastened topredetermined interior surfaces of their respective cooperatingextensions and defining and providing a truncated pyramidal pouringneck, the free upper ends of said extensions each having a lateraloutwardly bent flange, the end portions of adjacent flanges overlappingand being joined together in seal-proof relation and forming an endlessrim, a lid closing the pouring opening of said neck, one marginal edgeportion-of said'lid being hingedly connected with one of said flangesand overlapping said flange, the remaining marginal edge portions ofsaid lid overlapping the remaining flanges of said rim, and the latteredge portions of said lid being provided with flanges bent over and thenunderneath the cooperating flanges of the rim and being thus interlockedtherewith.

OSCAR BIOMEO.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,342,769 Selz June 8, 1920 1,372,218 Davidson Mar. 22, 19211,811,074 Butler June 23, 1931 1,928,941 Gomes Sept. 12, 1933 2,135,855Snyder Nov. 8, 1938 2,141,752 Hoarle Dec. 27, 1938 2,398,404 Brooks Apr.16, 1946 2,437,114 Moore Mar. 2, 194-8 2,483,162 Vivian Sept. 27, 19492,572,610 Gilbert Oct. 23, 1951 2,581,237 Casler Jan. 1, 1952

